pymel.conf: update help header
pymel.conf: update help header

leonsooi/pymel,david-lassonde-adsk/pymel,david-lassonde-adsk/pymel,assumptionsoup/pymel,shrtcww/pymel,assumptionsoup/pymel,AtonLerin/pymel,juggernate/pymel,AtonLerin/pymel,juggernate/pymel,shrtcww/pymel,leonsooi/pymel